How to distinguish the quality of copper pipe?

To distinguish the quality of copper tube, first look at the exterior appearance of copper tube, usually should be clean, light, no obvious oxidation discoloration, no sand holes, pinholes, cracks, peeling, bubbles, inclusion of black, green rust and bruising, mold marks; Table in the table should not be free to pull wrinkles, scratches, pits, obvious ring marks and other shortcomings. If there is no obvious shortcoming above, and feel lubricated, the appearance is purplish red, and the light is common, the discrimination is completed.

Copper ductility, plasticity is very good, so after bending to check the function of copper tube is also a good way. General processing molding copper pipe is mainly divided into hard, semi-hard, soft three, different conditions of the ductility of copper pipe, plastic flexibility is also different, the commonly used soft copper pipe length is often easy to bend and adhere to no cracking, when bending hard to bend or copper pipe appearance crack and break, it shows that the quality of copper pipe is not too good.

Truly confirm the quality of copper tube, but also through the detection of scale deviation, chemical composition, mechanical function, process function, grain size, eddy current inspection and other means to identify

Copper continuous casting and rolling process, the difficulty is of continuous casting and rolling process were casting rolling, and then put the high temperature liquid copper flashing into rolling out the copper billet in continuous casting machine (referred to as the continuous casting billet), follow-up after cooling, directly in the soaking furnace heat preservation time after directly into the strip rolling forming copper rolling technology in the unit. Continuous casting and rolling process it can skillfully use two kinds of casting and rolling process of combination, and that traditional first cast copper billet heating again after the furnace after rolling process with a brief process, reduce the labor force, increase the rate of metal harvest, save materials, enhance the quality of continuous casting billet, produce energy conservation and environmental protection of copper products, The advantages of mechanization, program and automation are realized directly.